Seek someone who can offer this to you or buy a sex swing and learn to tie yourself up. But make sure you do this safely, rope can be very dangerous. Is there anything in particular you're wanting to learn? There are plenty of resources on YouTube or Fetlife for learning how to tie with rope or do rope bondage. Suspending with your body off the ground is advanced, though, so be careful.

The internet is a wonderful thing and can help you learn many things. I might also suggest stopping by a local dungeon and inquiring about your interests. Who knows, they might offer a demonstration and helpful tips.

Is this something that your fiance is willing to practice? I'm not sure if your fiance doesn't find this interesting or just plane old doesn't want to participate in this bonding activity (pun not included).

This has nothing to do with tying up and suspending, but I did find an area about self bondage. It is thin rope wound around the body and tied so that clothes can be put on over it and it does not show. I have or had several pics of me with the rope intertwined.